人类首次远航抵达月球充满尘土及火山口的平原20年后,太空机构及其他探险者、幻想家正在研究新一回合的月球探险。现在,美国国家太空总署正在考虑常年返回月球的计划,由宇航员定期来回月球与地球之间。有的计划打算在月球远端设立太空观测站。另一项建议则是派宇航员试着在月球上生活,包括以土壤中的氧气呼吸,并建立前哨站。最有野心的计划是以月球为基地,将宇航员 Twenty years after mankind’s first long voyage to reach the moon-filled plains full of dust and crater, space agencies and other explorers and visionaries are studying a new round of lunar exploration. Now NASA is considering plans to return to the moon all year long, with astronauts periodically commuting between the moon and Earth. Some plans to set up a space station on the far side of the moon. Another suggestion is to send astronauts to try to live on the moon, including breathing in the soil’s oxygen and setting up outposts. The most ambitious plan is based on the moon, the astronauts